Definition: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to return the sum of all the numerical elements in the list A between the positions i and j (including positions i and j). Return 0 if no numerical element is present in the list between the given ranges. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
Input: 6, 10, ['g', 'T', 'c', 'z', '7159', 'X', 'S', 'n', '7925', 'a', 'K', 'w', 'O', 'u', '2189', '9895', '1681', '5359', 'M']

7925